Support remote unix socket forwarding

[sergio-bershadsky]

[omad]

OpenSSH >= 6.7 can use Unix domain socket forwarding

That means the reverse tunnel endpoint will be an UNIX listening socket instead of a traditional TCP listening socket.

For shared systems this can provide a more secure remote endpoint than a TCP socket.

[pahaz]

Who can provide some pseudo-code for this feature? Does anyone have any idea about how to implement it?

[aellwein]

I would like to have this feature, too. The use case is: forwarding of UNIX socket of Docker daemon to a local socket.

[takluyver]

I think this might depend on paramiko adding a feature (https://github.com/paramiko/paramiko/issues/544) before it's possible in sshtunnel.